EP 2722613 B1 20160817 - HEAT PUMP DEVICE, AIR CONDITIONER, AND REFRIGERATOR
Title (en)
HEAT PUMP DEVICE, AIR CONDITIONER, AND REFRIGERATOR
Title (de)
WÄRMEPUMPVORRICHTUNG, KLIMAANLAGE UND KÜHLSCHRANK
Title (fr)
DISPOSITIF DE POMPE À CHALEUR, CLIMATISEUR ET RÉFRIGÉRATEUR
Publication
Application
Priority
JP 2011063933 W 20110617
Abstract (en)
[origin: EP2722613A1] It is an object to obtain a heat pump device that can efficiently feed a high-frequency current to an electric motor and effectively heat a compressor. The heat pump device includes a compressor 1 including a compression mechanism 7 configured to compress a refrigerant and a motor 8 configured to drive the compression mechanism 7, heat exchangers, an inverter 9 configured to apply a voltage to the motor 8, and an inverter control unit 11 configured to drive the inverter 9. The inverter control unit 11 includes a stagnation detecting unit 12 configured to determine whether heating of the compressor 1 is necessary and notify the determination result and a high-frequency-alternating-current-voltage generating unit 13 and a PWM-signal generating unit 15 configured to shift to a heating operation mode when the heating is necessary and, in the heating operation mode, generate PWM signals to provide, based on a heating time carrier signal having two or more frequencies, a period in which a reflux current flows.
IPC 8 full level
CPC (source: EP US)
F04B 49/06 (2013.01 - EP US); F04C 28/06 (2013.01 - EP US); F25B 30/02 (2013.01 - US); F25B 49/025 (2013.01 - EP US); H02M 1/44 (2013.01 - EP US); H02M 7/53871 (2013.01 - EP US); H02M 7/53876 (2021.05 - EP); F04C 2240/403 (2013.01 - EP US); F04C 2270/701 (2013.01 - EP US); F25B 2600/021 (2013.01 - EP US); H02M 7/53876 (2021.05 - US); Y02B 30/70 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2722613 A1 20140423; EP 2722613 A4 20150422; EP 2722613 B1 20160817; CN 103688116 A 20140326; CN 103688116 B 20160504; JP 5748851 B2 20150715; JP WO2012172684 A1 20150223; US 2014174118 A1 20140626; US 9322587 B2 20160426; WO 2012172684 A1 20121220
DOCDB simple family (application)
EP 11867777 A 20110617; CN 201180071678 A 20110617; JP 2011063933 W 20110617; JP 2013520388 A 20110617; US 201114126867 A 20110617